Most Polluted Cities in Saint Helena
Real-time air quality data from cities around the world Saint Helena
Real-time air pollution rankings for 25 cities across Saint Helena. See which cities have the highest pollution levels and worst air quality.
The Briars
Saint Helena
AQI
St Paul's
Saint Helena
AQI
Sandy Bay
Saint Helena
AQI
Rupert's Valley
Saint Helena
AQI
Rosemary Plain
Saint Helena
AQI
New Ground
Saint Helena
AQI
Longwood
Saint Helena
AQI
Levelwood
Saint Helena
AQI
Kunji Field
Saint Helena
AQI
Head o' Wain
Saint Helena
AQI
Half Tree Hollow
Saint Helena
AQI
Guinea Grass
Saint Helena
AQI
Domaine de Longwood House
Saint Helena
AQI
Deadwood
Saint Helena
AQI
Cleughs Plain
Saint Helena
AQI
Bottom Woods
Saint Helena
AQI
Bottom Woods
Saint Helena
AQI
Bluemans Field
Saint Helena
AQI
Blue Hill
Saint Helena
AQI
Barren Ground
Saint Helena
AQI
Alarm Forest
Saint Helena
AQI
Jamestown
Saint Helena
AQI
Two Boats Village
Saint Helena
AQI
Georgetown
Saint Helena
AQI
Edinburgh of the Seven Seas
Saint Helena
AQI
Understanding Air Quality Index
Good
Air quality is satisfactory, and air pollution poses little or no risk.
Moderate
Air quality is acceptable. However, there may be a risk for some people.
Unhealthy for Sensitive Groups
Members of sensitive groups may experience health effects.
Unhealthy
Everyone may begin to experience health effects.
Very Unhealthy
Health alert: everyone may experience more serious health effects.
Hazardous
Health warnings of emergency conditions. The entire population is likely to be affected.
The Air Quality Index (AQI) is a scale from 0 to 500 that measures air pollution levels. Poor air quality can cause respiratory issues, cardiovascular problems, and other health concerns.
Source: US EPA Air Quality Index
Last updated: Oct 23, 2026 12:04 AM